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Message-Id: <166990553243.253128.13594802750635478633.stgit@devnote3>
Date: Thu, 1 Dec 2022 23:38:52 +0900
From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To: Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>,
Mark Brown <broonie@...nel.org>,
Kalesh Singh <kaleshsingh@...gle.com>,
Masami Hiramatsu <mhiramat@...nel.org>,
Marc Zyngier <maz@...nel.org>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Sandeepa Prabhu <sandeepa.s.prabhu@...il.com>
Subject: [PATCH 0/3] arm64: kprobes: Fix bugs in kprobes for arm64
Hi,
I found some bugs in kprobes for arm64. One is a critical issue, which
will cause a kernel crach easily with lockdep[1/3]. Others are minor
issues and rare cases. [2/3] let do_page_fault() fixup the page fault
in kprobes user handler, and [3/3] is more like code cleanup and
returns DBG_HOOK_ERROR if it can not handle kprobe's BRK (but that
should not happen.)
Thank you,
---
Masami Hiramatsu (Google) (3):
arm64: Prohibit probing on arch_stack_walk()
arm64: kprobes: Let arch do_page_fault() fix up page fault in user handler
arm64: kprobes: Return DBG_HOOK_ERROR if kprobes can not handle a BRK
arch/arm64/kernel/probes/kprobes.c | 87 +++++++++++++++---------------------
arch/arm64/kernel/stacktrace.c | 7 ++-
2 files changed, 41 insertions(+), 53 deletions(-)
--
Masami Hiramatsu (Google) <mhiramat@...nel.org>
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